Is it just me, or does anyone else have problems with Vapor Titan Soft Touch Diamond Series Regular Manual Battery in Black? All my colored ones work great, but black ones always die on me. frustrating! my newest one (that was a replacement for one that arrived DOA), is about 5 wks old and just pooped out on me. Took it off the charger and the LED on it came on as soon as it was removed from charger. Stayed on for about 5 mins and now i get nothing from it. doesnt turn on when i push the button, doesnt seem to recognizes when it on the charger - nothing.